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File: includes/getid3/module.audio.dss.php

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  Classes of Karl Holz  >  WaldScan  >  includes/getid3/module.audio.dss.php  >  Download  
File: includes/getid3/module.audio.dss.php
Role: Auxiliary script
Content type: text/plain
Description: getID3 dependency
Class: WaldScan
Scan directories for files with certain extensions
Author: By
Last change:
Date: 1 year ago
Size: 3,110 bytes
 

Contents

Class file image Download
<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details //
/////////////////////////////////////////////////////////////////
// //
// module.audio.dss.php //
// module for analyzing Digital Speech Standard (DSS) files //
// dependencies: NONE //
// ///
/////////////////////////////////////////////////////////////////


class getid3_dss extends getid3_handler
{

    function
Analyze() {
       
$info = &$this->getid3->info;

       
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
       
$DSSheader = fread($this->getid3->fp, 1256);

        if (!
preg_match('#^(\x02|\x03)dss#', $DSSheader)) {
           
$info['error'][] = 'Expecting "[02-03] 64 73 73" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($DSSheader, 0, 4)).'"';
            return
false;
        }

       
// some structure information taken from http://cpansearch.perl.org/src/RGIBSON/Audio-DSS-0.02/lib/Audio/DSS.pm

        // shortcut
       
$info['dss'] = array();
       
$thisfile_dss = &$info['dss'];

       
$info['fileformat'] = 'dss';
       
$info['audio']['dataformat'] = 'dss';
       
$info['audio']['bitrate_mode'] = 'cbr';
       
//$thisfile_dss['encoding'] = 'ISO-8859-1';

       
$thisfile_dss['version'] = ord(substr($DSSheader, 0, 1));
       
$thisfile_dss['date_create'] = $this->DSSdateStringToUnixDate(substr($DSSheader, 38, 12));
       
$thisfile_dss['date_complete'] = $this->DSSdateStringToUnixDate(substr($DSSheader, 50, 12));
       
//$thisfile_dss['length'] = intval(substr($DSSheader, 62, 6)); // I thought time was in seconds, it's actually HHMMSS
       
$thisfile_dss['length'] = intval((substr($DSSheader, 62, 2) * 3600) + (substr($DSSheader, 64, 2) * 60) + substr($DSSheader, 66, 2));
       
$thisfile_dss['priority'] = ord(substr($DSSheader, 793, 1));
       
$thisfile_dss['comments'] = trim(substr($DSSheader, 798, 100));


       
//$info['audio']['bits_per_sample'] = ?;
        //$info['audio']['sample_rate'] = ?;
       
$info['audio']['channels'] = 1;

       
$info['playtime_seconds'] = $thisfile_dss['length'];
       
$info['audio']['bitrate'] = ($info['filesize'] * 8) / $info['playtime_seconds'];

        return
true;
    }

    function
DSSdateStringToUnixDate($datestring) {
       
$y = substr($datestring, 0, 2);
       
$m = substr($datestring, 2, 2);
       
$d = substr($datestring, 4, 2);
       
$h = substr($datestring, 6, 2);
       
$i = substr($datestring, 8, 2);
       
$s = substr($datestring, 10, 2);
       
$y += (($y < 95) ? 2000 : 1900);
        return
mktime($h, $i, $s, $m, $d, $y);
    }

}


?>